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Performance Evaluation of Pavements Constructed under Quality Assurance Specifications. Final Report
| 题名： | Performance Evaluation of Pavements Constructed under Quality Assurance Specifications. Final Report |
| 作者： | Badaruddin, S. R. |
| 关键词： | Flexible pavements; Quality assurance; Performance evaluation; Rutting; Cracking(Fracturing); Asphalt mix design; Design standards; Field tests; Grooving; Cost analysis; Highways; Service life |
| 摘要： | In the mid-eighties, some bituminous pavements in Indiana were having high levels of rutting within a few years of construction. After reviewing the INDOT construction specifications, it was decided that with slight modification they had the capability to produce the necessary quality pavements. However this required assuring quality during mix production and compaction. Essentially, INDOT decided to modify the aggregate gradation and control field compaction to meet density and air void requirements. It has been shown in an NCHRP report (4) that mix design and field compaction are the two most important factors affecting pavement performance. In order to evaluate implementation of QA specifications, a study was carried out to compare the performance of in-service bituminous pavements laid under QA with pavements laid using the standard specifications of the mid-eighties (or non-QA specifications). The evaluation includes field as well as laboratory tests and the QA pavement are showing better performance. A questionnaire was sent out to solicit response from a random sample of people involved with QA, regarding its implementation in Indiana. The goal of the questionnaire was to assess 'user' response from all the different participants in the QA program, whether it was well received and what suggestions could be obtained to further improve it. |
| 总页数： | 57p |
| 报告类型： | 科技报告 |
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